Fruit-jar cover



(No Model.)

H. A. HOPPE.

FRUIT JAR oovnn. No. 275,047. Patented Apr.3, 1883.

4 UNITED STATES ries.

HENRY A. HOPPE, OF ST. LOUIS, MISSOURI.

FRUIT-JAR COVER.

SPECIFICATION forming part of Letters Patent No. 275,047, dated April 3, 1888.

(N0 model.)

To all whom it may concern:

Be it known that I, HENRY A. HOPPE, a citizen of the United States, residing at St; Louis, and State of Missouri, have invented a new and useful Cover for Fruit-Jars, &c., of which the following is a specification.

My invention is intended to apply to jars, bottles, cans, and similar vessels for preserving fruit and various other contents that require to be sealed.

According to my invention I provide a cover having a disk of cork, wherewith the air-tight joint or closure can be made with the threaded portion of the neck of thejar. At same time a further air-tight joint is provided between the flange of the cover, drawn tight against an interposed packing in an annular groove of the jar when the cork disk or cover is screwed down to completely close the jar.

My invention, as regards its specific novel parts, can be stated to consist, first, in the novel manner and means whereby the cork material can be firmly embedded and made to form an immovable part of the cover; second- ]y, in combining with the cover carrying the cork, as hereinafter described, the further outer annular flange fitted to engage an annular groove of thejar having a gasket or packing; thirdly, in the combination of my improved cover parts, consisting of the metal cover, its annular outer flange, also cork disk, with thejar, &c.,having a neck with internal threads to receive the cork, and also groove and packing for thejoint with the flange of the cover. I attain the said objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a perspective view, chiefly to show my improved cover as it appears when applied to close ajar. Fig.2 is a central vertical section through a fruit-jar with my improved cover in place. Fig. 3 also shows the cover in place, with a side view of the cork disk as it appears united to the serrated flange and hollow cap or head portions of the cover. Fig'. 4 is a perspective view of the cover when same is inverted.

Similarletters refer to similar parts throughout the several views.

A represents my jar, formed like ordinary fruit-jars of the bottle form, but provided with internal threads at a, (see Figs. 2, 3,) and having the annular groove at I). (See Figs. 1, 2, 3.) The cork of my cover is screwed down into the threads a of thejar, forming the first airtightjoint or closure; and it is to the annular groove b and its packing b that the vertical or outer flange of my cover is united, forming the second air-tight closure.

(J represents the cover; 0, its squareshaped head; 0, its outer annular flange; 0 its inner flange. The cover, with its said parts, maybe of sheetmetal, pressed or otherwise wrought into the shape shown in the figures. The head 0 of the cover, projecting above the plane of the cover, forms a square-shaped cavity, (1, into which the corresponding shaped portion of the cork is firmly embedded. (See Fig. 2.) By its outer flange, c, the cover presses or binds top of the packing in the annular groove of thejar, and performs the function of surrounding the joint of the cork with the jar with an outer air-tight joint. By its in ner flange, 0 the cork disk is further secured tirmiy from moving, since the serrations or V cuts a can be embedded in the side of the cork disk, as indicated in Figs. 2, 3, l.

I) represents a single piece of cork cut or made to have the shape indicated-that is to say, to have the projecting square-shaped head (1 and the thick disk portion .61 (See Figs. 2, 3, 4.

It has always been a desideratuin to close jars or vessels of this class with cork-a material known not to have any injurious effect upon the fruit or contents; but it has been found very difficult to unite or make cork material a part of the cover, so as to render same practical for uses to hermetically seal or close a jar. I embed the cork firmly by its head 61 into the hollow or mortise formed'by the metal head act the cover, (see Fig. 2,) preventing the cork entirely from turning; and this joint is further made certain, strong, and durable by embedding the V-cut edges of the flange c ofthe cover into the side of the cork. (See Figs. 2, 3, 4.) Preferably the flange c tapers to wedge the cork at that point. If otherwise made, the swelling of the cork, when dipped in hot water, insures at the time of sealing the jar a most strong, tight, and immovable fastening of the cork to the cover.

To close or seal the jar, or to put my improved cover in place, 1 simply dip the cover in hot water, then screw the cover down, forcing the cork disk to enter the threads of the jar, as indicated in Figs. 2, 3. In so screwing the cover down to its place its outer flange presses upon the packing in the groove and closes the joint at that point. The contents are thus protected by two different air-tight joints, the threads enabling the operator to bind the outer flange tightly against the packing. Specially is the cork material firmly united to the cover and adapted to close the jar. In fact, a wrench can be applied to the square-shaped head 0 of the cover to force the cork properly into the neck of thejar, or to loosen the cover from the jar, as the case may be.

cut edges, the cork D having head d and diskshaped portion (1 by means whereof'the said cork material can be firmly secured to the cover and made to form part of same, substantially as described.

2. The combination of the cover 0, having the head 0, inner flange, 0 with V-shaped cut edges and the cork D, havinghead d and disk shaped portion (P, with a fruit or similar jar having threads (0, by means whereof the said cover parts can be sealed to thejar, substantially as and for the purposes set forth.

3. The combination of the cover G, having the head 0, inner flange, 0 with serrations c and the outer flange, 0, the cork D, shaped to have the head and disk portions d d and a fruit or similar jar having threads (1, annular groove 1), and packing b, by means whereofthe said jar, 850., can be made air-tight, in the manner and for the purposes set forth.

In testimony of said invention I have hereunto set my hand.

' HENRY A. HOPPE. Witnesses:

TIMOTHY DINAN,

PETER MCDANIEL. 

